Don't allow user interaction when activity indicator view is visible

Question

I have a view which contains two views. One of those views contains two buttons and some text labels. The other one, with alpha set to 0.25, has an UIActivityIndicator

Answer 1

To disable touch event in a view,

[[UIApplication sharedApplication] beginIgnoringInteractionEvents];

To enable touch event in a view

[[UIApplication sharedApplication] endIgnoringInteractionEvents];